Antifouling paint and varnish.



UNITED STATESBATENT WALTER SCHOELLER AND WALTHER SCHRAUTH, or BERLIN, ERMANY, 'assmnom TO FARBENFABRIKEN VORM. FRIEDR. BAYER & CO., 013 ELBERFELD, GERJFAQNYJ A CORPORATION OF GERMANY.

ANTIFOULING PAINT AND VARNISI-L.

No Drawing.

To all whom it may concern:

Be it known that We, Mirna SoHoELLER and \VA'LTHER SCHRAUTH, doctors of philos ophy, chemists, citizens of the German Empire, residing at Berlin, Germany, have in-,

vented new and useful Improvements in Antifoulmg Paints and varnishes, of which the following is a specification.

Our invention relates to the manufacture of preparations suitable coatings, paints or varnishes which are remarkable 'for their good preservative properties. They prevent e. '5]. animal and vegetable growth from forming on the object coated, such as on ships bottoms etc. It has been hitherto attempted to attain this end by adding certhe copper salt of oxymercuric butyric acid the lead salt of oxymercuric salicylic acid;

etc., may be used for the production of the Specification of Letters Patent: Application filed May 20, 1909. Serial No. 497,305.

preservative paints etc.

is a salt of the substance known as by osrion.

Patented Aug. 16', 1 910.

drargyrum salicylieum in the German Pharmacopoeia, while the former prepara-' tions are made in accordance with the three- The latter product tions givenin our German Patent No.

208,634 and in accordance with the-publica tion in the Berk-life (161' -Dcu-t8chen Gilevh-iec/wn Gcsellschaft, vol. 35, page 2870. The' products referred to and described in our applications Serial -Nos. 497,302 and 497,303. may also be advantageously the purposes of this invention.

A useful preparation can be obtained for instance by mixing 1 part 01f. one of .the mentioned substances w th 25 parts of a; suitable coatlng material such as varnishes,

paints,'etc. but the quantities and the sol-.

vents may be varied Without altering, thereby the nature of the invention.

\Ve claim:

employed for l. As'new articles ofmanufacture a coat;

ing material comprising a salt of an oxymercuric substituted organic acid in conjunction with other suitable substances,- substan tially described.

As a new article of manufacture a 'coating material comprising a salt of oxymer-- arr curic salicylic acid in conjunction with other suitable substances, substantially as described.

in testimony whereof we have hcreuntb the presence of two subset our hands in scribing Witnesses.

WALTER SCHOELLER'. WALTHER SCHRA UTH.

\Vi-tnesses HENRY HAsPER,

WOL'DEMAR HAUPT. 

